林业科学2009，Vol.45Issue(10)：120-125,6.
水热-微波处理对榆木软化和顺纹压缩及弯曲的影响
Effect of Hydrothermal-Microwave Treatment on Softening and Longitudinal Compressing and Bending Elm Wood
摘要
Abstract
In the present work, hydrothermal-microwave treatment was used for elm dimension-timber softed treatment. Ratio of longitudinal compressing, single and muti-dimensional minimal curvature radius were used to evaluate the softening result. XRD and FTIR were used for the characterization of surface composition and crystallinity. The results show that hydrothermal-microwave treatment can soften elm dimension-timber significantly, the content of extractive and hemicellulose also decreased significantly. The content of lignin increased slightly(1.73% ~ 0.47% ). In addition, the number of hydroxyl groups on wood surface increased significantly. For the non-crystalline region, microsoft fiber tended to arrange orderly and increase the degree of crystallinity. In the crystal region, the hydroxyl of the sur-microsoft fiber was exposed and the hydrogen bonding enhanced and the width of crystal region increased. When treated under the optimum condition of scheme B, the ratio of longitudinal compressing reached maximum and the single and muti-dimensional radius reached minimum. The main reason of the best softening performance of sample B was the high degree of crytallinity and appropriate number of hydroxyl.关键词
榆木/水热-微波处理/木材软化性质/顺纹压缩Key words
elm/hydrothermal-microwave treatment/softening wood properties/longitudinal compressing分类
农业科技引用本文复制引用
宋魁彦,李坚..水热-微波处理对榆木软化和顺纹压缩及弯曲的影响[J].林业科学,2009,45(10):120-125,6.基金项目
国家自然科学基金(30871969,30630052)以及黑龙江省攻关课题(GA09B202-07)项目资助. （30871969,30630052）
